MAP20: Refinery (Claustrophobia 1024)

MAP20: Refinery is the twentieth map of Claustrophobia 1024. It was designed by Ronald Lubbelinkhof (Dutch Devil), and uses the music track "The Imp's Song" by Robert Prince.

Essentials
Take the armor then go straight forward to a shotgun, then open the door in front of you and kill any zombies and imps waiting behind it. Walk south to another door and kill more monsters waiting behind it, then go to the end of the corridor and flip the switch to your right to lower a lift, which you can ride up to a ledge holding the yellow keycard. Ride the lift back down and go through the second door again, then open the yellow bars to your left to reach a second lift behind them that goes up to an enclosed room. Flip the switch here then go back to the starting point and open the door here, then flip the switch straight ahead to lower a lift behind it and reveal an open door. Flip the switch behind that door, then go back round to the yellow key ledge to find that a bridge has risen over the nukage, letting you reach the red keycard. Taking it opens a compartment behind you with a berserk pack and one or two chaingunners.

Go back to the first door you opened, in the north-east corner of the playing area, and press the button here, then go back to the lift on the west side of the map and ride it up - some red bars here have opened, letting you reach the ledge with the exit door. The door will not open yet, so go past it and follow the path east and north to a door that has the blue keycard behind it. Drop to the ground and open the door to your right, then head south through the second door again and flip the switch on your left to lower another lift. Ride the lift up and press the button to open the nearby door, then go straight forward to a switch and kill the mancubus that is revealed before flipping it; this will open the exit door you passed earlier, but will also cause imps and zombies to teleport in. Make your way back to the exit door and kill an imp waiting behind it before flipping the final switch.

Secrets

 * 1) Lower the brown stack of crates in the north-east part of the playing area, then go through the passage that is revealed to the stack of crates leading up to the super shotgun. (sector 432)
 * 2) After lowering the stack of crates leading to secret #1, the passage you walk through contains a switch. Flip this switch to lower a lift next to you. Ride this lift up, and at the top, quickly run straight west and flip the switch here (this switch closes after one second). Now go to the ledge with the yellow key and drop into the nukage. There is an open door in the north-east corner, concealing a teleporter that takes you to a megaarmor on top of a crate. (sector 141)
 * 3) One of the walls in the south-east part of the playing area has a candle in front of it. Open this wall to find a plasma gun. (sector 386)

Current records
The records for the map at the Doom Speed Demo Archive are:

The data was last verified in its entirety on December 21, 2021.

Player spawns
This level contains four spawn points:
 * 1) facing east. (thing 10)
 * 2) facing north. (thing 206)
 * 3) facing south. (thing 210)
 * 4) facing east. (thing 211)

Things
This level contains the following numbers of things per skill level: